Profile: Electronic Systems Technology is a manufacturer of wireless products. Our product line includes Model 192E, Model 192S, model, Model 192V and Model 95. Our ESTeem Model 192E is the first wireless ethernet wireless product designed for the rigors of industrial applications. The Model 192E provide 11Mbps of communication rate over distances of 7 miles. The distance is increased by the use of repeater sites. Our 2013 narrow band(12 KHz). Our ESTeem Model 192CHP comes with the industry standard of RS-232C, RS-422 and RS-485 asynchronous communications ports to give the user a new dimension to "Wireless Networking".